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Class Information
Number: 423/222
Name: Chemistry of inorganic compounds > Modifying or removing component of normally gaseous mixture > Carbon dioxide or hydrogen sulfide component > Reacting mixture with sulfur dioxide, sulfite, or bisulfite
Description: 2-
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7625539 |
Process for producing a purified gas stream |
Dec. 1, 2009 |
| 7575732 |
Process for treating a gas stream |
Aug. 18, 2009 |
| 7390470 |
Process for treating a gas stream |
Jun. 24, 2008 |
| 7323036 |
Maximizing regulatory credits in controlling air pollution |
Jan. 29, 2008 |
| 6984372 |
Dynamic sulfur tolerant process and system with inline acid gas-selective removal for generating hydrogen for fuel cells |
Jan. 10, 2006 |
| 6818194 |
Process for removing hydrogen sulfide from gas streams which include or are supplemented with sulfur dioxide, by scrubbing with a nonaqueous sorbent |
Nov. 16, 2004 |
| 6776974 |
Process for the production of sulfur |
Aug. 17, 2004 |
| 6645459 |
Method of recovering sulfurous components in a sulfur-recovery process |
Nov. 11, 2003 |
| 6610264 |
Process and system for desulfurizing a gas stream |
Aug. 26, 2003 |
| 6534030 |
Process for producing ammonium thiosulfate |
Mar. 18, 2003 |
| 6063347 |
Inhibition of pyrophoric iron sulfide activity |
May. 16, 2000 |
| 6056936 |
Catalytic desulphurization process for a gas containing H.sub.2 S and SO.sub.2 compounds and catalyst for implementing said process |
May. 2, 2000 |
| 5628977 |
Process for the desulfurization of a crude gas containing H.sub.2 S |
May. 13, 1997 |
| 5514351 |
Desulfurizing tailgas from sulfur recovery unit |
May. 7, 1996 |
| 5508013 |
Process for the production of sulphur from at least one sour gas containing hydrogen sulphide and a fuel effluent and thermal reactor |
Apr. 16, 1996 |
| 5494650 |
Process for improving the sulphur yield of a complex for producing sulphur from a sour gas containing H.sub.2 S, the said complex comprising a sulphur plant and then an oxidation and hydrolysi |
Feb. 27, 1996 |
| 5486345 |
Treatment of gases |
Jan. 23, 1996 |
| 5468458 |
Treatment of gas streams |
Nov. 21, 1995 |
| 5439664 |
Process for thermal conversion of hydrogen sufide to elemental sulfur |
Aug. 8, 1995 |
| 5403567 |
Dual impeller method and apparatus for effecting chemical conversion |
Apr. 4, 1995 |
| 5389351 |
Method for desulfurizing a gas |
Feb. 14, 1995 |
| 5378441 |
Method to scavenge hydrogen sulfide from natural gas |
Jan. 3, 1995 |
| 5356709 |
Non-PVC coextruded medical grade port tubing |
Oct. 18, 1994 |
| 5304361 |
Removal of hydrogen sulfide |
Apr. 19, 1994 |
| 5292492 |
Recovering sulfur from ammonia acid gas stream |
Mar. 8, 1994 |
| 5262135 |
Process for producing elemental sulfur from an H.sub.2 S-containing gas |
Nov. 16, 1993 |
| 5254323 |
Industrial process for the separation and recovery of chlorine |
Oct. 19, 1993 |
| 5057298 |
Process for recovery of sulfur values from a gas stream |
Oct. 15, 1991 |
| 4976935 |
Regeneration of solvent in H.sub.2 S removal from gases |
Dec. 11, 1990 |
| 4960575 |
Removal of hydrogen sulfide with on site generated sulfite from geothermal steam |
Oct. 2, 1990 |
| 4919912 |
Process for the treatment of sulfur containing gases |
Apr. 24, 1990 |
| 4861577 |
Method for removing the sulphur content of a weak gas containing sulfur dioxide |
Aug. 29, 1989 |
| 4835043 |
Sulfite-oxide process for scavenging hydrogen sulfide |
May. 30, 1989 |
| 4634539 |
Scavenging oxygen from aqueous systems |
Jan. 6, 1987 |
| 4614644 |
Process for removal of H.sub.2 S from geothermal steam and the conversion to soluble sulfur compounds |
Sep. 30, 1986 |
| 4525294 |
Amino acid mixtures, their alkali metal salts and process for preparing same |
Jun. 25, 1985 |
| 4479929 |
Production of sulfur from a H.sub.2 S-bearing gas stream |
Oct. 30, 1984 |
| 4432958 |
Method for the selective removal and recovery of ammonia from ammonia- and hydrogen sulfide-containing gas mixtures |
Feb. 21, 1984 |
| 4405593 |
Process of decreasing the sulfur content of exhaust gases obtained during the recovery of sulfur |
Sep. 20, 1983 |
| 4308242 |
Producing sulfur-containing compositions from gaseous sulfur compounds |
Dec. 29, 1981 |
| 4146569 |
Process for removing gaseous impurities from a gaseous mixture containing the same |
Mar. 27, 1979 |
| 4107269 |
Method of purifying a hydrogenated gas containing acid gases |
Aug. 15, 1978 |
| 4073863 |
Regeneration of absorbent solutions used for removing gaseous acid impurities from gaseous mixtures |
Feb. 14, 1978 |
| 4056606 |
Desulfurization of waste gases containing hydrogen sulfide |
Nov. 1, 1977 |
| 4013779 |
Process for removal of ammonia, hydrogen sulfide and hydrogen cyanide from gases containing these substances |
Mar. 22, 1977 |
| 3962404 |
Process for regenerating absorbent solutions used for removing gaseous impurities from gaseous mixtures by stripping with steam |
Jun. 8, 1976 |
| 3956460 |
Process for the treatment of gas streams containing hydrogen cyanide |
May. 11, 1976 |
| 3933994 |
Process for desulfurizing gases |
Jan. 20, 1976 |
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